Hai Collection, Lower Volume Radical: Rat (shǔ) Kangxi Strokes: 20 Page 1528, Entry 25 Broad Rhymes (Guangyun): Pronounced wu. Collected Rhymes (Jiyun), Rhyme Compilation (Yunhui), and Orthodox Rhymes (Zhengyun): Pronounced e and hu, combined as wu. Jade Chapters (Yupian): The wushu (flying squirrel) is known as feisheng (living creature that flies). Orthodox Rhymes (Zhengyun): Another name is wujishu (five-skilled rat). Literary Expositor (Erya), Explaining Birds: The wushu is called yiyou. Commentary: Its appearance is like a small fox and resembles a bat, with fleshy wings and a tail. The hair on its neck and flanks is a purple-red color, its back is a greyish-mugwort color, and its underbelly is yellow. Its beak and chin are variegated with white, its feet are short, its claws are long, and its tail is about three feet long. It flies and nurses its young, and is also called feisheng (living creature that flies). Its cry sounds like a human calling out. It eats fire and smoke. It can travel from high places to low places, but cannot travel from low places to high places. Sub-commentary: Another name is yiyou. Ma Rong, Rhapsody on the Long Flute (Changdi Fu): The gibbons and macaques howl by day, the flying squirrels cry by night. Textual Research: In the Literary Expositor (Erya), Explaining Birds, the wushu is called yiyou. In the commentary, it is described as looking like a small fox and resembling a bat, with fleshy wings, with the hair on its neck and flanks being purple-red, its back being a greyish-mugwort color, its underbelly being yellow, its beak and chin being variegated with white, its feet being short, its claws being long, and its tail being three feet long. It flies and nurses its young, and is also called feisheng (living creature that flies). Its cry sounds like a human calling out. It eats fire and smoke. It can travel from high places to low places, but cannot travel from low places to high places. Another name is yiyou. Notes: Corrected the character for bat (fú) according to the original text. Added the words "wings and tail" after "fleshy wings." Changed "two feet" to "three feet." Removed the word "called" before "feisheng." Removed the word "rat" before "cry." Added the word "sub-commentary" before "another name is yiyou."